Presentation Title

Presenter Information

Start Date

November 2016

End Date

November 2016

Location

HUB 302-#114

Type of Presentation

Poster

Abstract

Consequences of an earthquake event can be very destructive. To minimize the effect of intense shaking and corresponding reduction in seismic amplification before reaching the surface, the ground can be strengthened so that the destruction to infrastructure can be reduced. Soil reinforcement methods such as stone columns, jet grouting and deep soil mixing are being effectively used in weak soil areas for improving the foundation support, and also reducing the structural deformations caused by earthquakes. The objective of this study is to analyze the effect of deep soil mixing soil cement panels as a method in reducing the seismic ground shaking intensity on soft clay sites. A soft clay profile was constructed in an aluminum laminar box on top of a single axis shake table. Granular Kaolin Clay was mixed with sufficient water to make slurry was chosen as a soil profile. The granular kaolin slurry was placed in the laminar box and was then consolidated at the vertical pressure of 10 kPa. The soil-cement panels, having depth half of the depth of soil profile, were prepared in a mold by mixing High Early Strength Cement Type III and Kaolin Clay with the aid of water. These panels were installed into the slope to replace, separately, with 10% and 20% of the total surface area of the clay profile. The slopes were installed with five triaxial accelerometers. The, the slopes were subjected to different ground motions exhibiting sinusoidal motions of different amplitudes and frequencies as well as ground motions recorded during several earthquakes. The study results show that the deep soil mixing panels are effective in reducing seismic shaking intensity on ground.

This document is currently not available here.

DOWNLOADS

Since November 03, 2016

Share

COinS

Nov 12th, 4:00 PMNov 12th, 5:00 PM

Reducing The Impact Of Earthquake On Soft Clay Sites

HUB 302-#114

Consequences of an earthquake event can be very destructive. To minimize the effect of intense shaking and corresponding reduction in seismic amplification before reaching the surface, the ground can be strengthened so that the destruction to infrastructure can be reduced. Soil reinforcement methods such as stone columns, jet grouting and deep soil mixing are being effectively used in weak soil areas for improving the foundation support, and also reducing the structural deformations caused by earthquakes. The objective of this study is to analyze the effect of deep soil mixing soil cement panels as a method in reducing the seismic ground shaking intensity on soft clay sites. A soft clay profile was constructed in an aluminum laminar box on top of a single axis shake table. Granular Kaolin Clay was mixed with sufficient water to make slurry was chosen as a soil profile. The granular kaolin slurry was placed in the laminar box and was then consolidated at the vertical pressure of 10 kPa. The soil-cement panels, having depth half of the depth of soil profile, were prepared in a mold by mixing High Early Strength Cement Type III and Kaolin Clay with the aid of water. These panels were installed into the slope to replace, separately, with 10% and 20% of the total surface area of the clay profile. The slopes were installed with five triaxial accelerometers. The, the slopes were subjected to different ground motions exhibiting sinusoidal motions of different amplitudes and frequencies as well as ground motions recorded during several earthquakes. The study results show that the deep soil mixing panels are effective in reducing seismic shaking intensity on ground.